I am trying to write to a tag through the gateway network from a 7.9.21 gateway to a 8.1.42 gateway and I am getting the error
Error writing to test.Value: Exception occurred on remote machine, error code=GENERAL_PROTOCOL_EXCEPTION [100]
The tag is a memory tag on the 8.1.42 gateway with read only set to false. I have tried resetting the gateway network connection, saving the tag provider configuration, and also rebooting each of the gateway servers. Any ideas on what is causing this?